Sink drain



Patented June 3, 119245 NT OFFICE.

.A BRAM N. PASMAN, OF WATERBURY, CONNECTICUT, VASSICrNOR TO THE AMERICANPIN COMPANY, 0F WATERBURY, CONNECTICUT, A. CORPORATION 0F CONNECTICUT.

' simi naam.

Application led August 18, 1923. rSerial iNo. 658,029.

T0' all whom t may concern.'

Be it known that I, ABRAM N. PAsMAN, a citizen of Lthe United States,residing at Waterbury, in the countyof New Haven and State ofConnecticut, have invented an Improvement in Sink Drains, of which thefollowing is a specification.

My present invention relates to a sink Y drain or` similar' fittingadapted to connect the sink basin or other receptacle with a waste pipe.The invent-ion furthermore relates particularly to that type of sinkdrain in which an interchangeable strainer and stopper are employed. Iam aware that heretofore sink drains have been provided withinterchangeable strainers and Stoppers, the strainers being frictionallymaintained in position in the opening in the drain and removabletherefrom in order to insert the stopper to close the opening to retainwater or other liquid inV the sink basin or other receptacle. In vthesedevices, however, so far as I am aware, the construction has been suchthat common seats have been provided for the strainerand the stopperwith the. result that as theparts become more or less worn through useneither the strainer nor the stopper fit the opening in the drain in anefficient manner. The principal objectof my invention is to overcomethis didiculty by so constructing the litting that the seat provided forthe strainer is independent of the seat or seats provided for thestopper so that the wear on one seat, for example the seat forthestrainer will have no effect on the seat or seats for the stopper.Furthermore in carrying out the invention the strainer is soconstructedv that tongues are cut from the metal forming the saine AFig. 2 is a transverse section of the body member with the strainer inposition there- 1n.

Fig. 3 is a similar view showing the -stopper in position.

F ig. fi is a plan of the strainer.

Fig. 5 is an elevation of the strainer.

gig; 6 is a section on line X-X, F ig. 4, an Y F ig. 7 is a sectionshowing another form of strainer;

Referring to the drawing, it willbe seen that the body member or shellof the sink drain is indicated at 10 and is provided exteriorly withscrew threads 11 for engagement withv a suitable fitting4 to connect thesame to a waste pipe. Furthermore at the inner end the body member maybe rovide-d with across bar 12., At the opposite end as is customary thevbody member is provided with a iiange 13 adapted to be seated in a.recess provided there-for in a sink basin or othersimilar receptacle,the body member passing through an opening in the sink or otherreceptacle and being connected to the waste pipe in the customarymanner. Adjacent thek outer end thereof the body member is provided witha circular face 14 forming a seat for the strainer as hereinafterdescribed. The face 14 is of appreciably larger diameter than theinterior diameter of the body member and at its outer end unites withthe outer face of the iiange 13 in a shoulder indicated at 15, while atits inner end this face 14 unites with the inner face of the body memberby a shoulder indicated at 16, the shoulders 15 and 16 as hereinafterdescribed forming seats for a stopper which may be interchangeablyemployed with a strainer. It will be Aunderstood, however, that the face.14 inay diverge or Hare slightly toward the ange 13.

The strainer is indicated at 17. This preferably comprises a circularysheet of metal lor other similar material having therein a plurality ofcentrally disposed and prearranged openings 18 and also a plurality ofopenings 19 adjacent the periphery of the strainer. The openings 19 areformed by suitably punching the plate and the metal thus cut therefromis turned inwardly to form-the prongs. er @argues .20Y ef these tongues2O has a portion which is sub-v stantially at right angles to the bodyof the strainer, While the extremity thereof as indicated at 21 isturned out so that the edge is substantially coincident With the edge of'the body of the strainer, that is to say the distance between theedgesrof the outturned extremities of oppositely disposed tongues issubstantially lthe same vas the diameter of the body of the strainer.Each of these tongues is therefore U-shaped in cross section and isconsequently adaptedto receive and retain, for example, a rubber ring orband 22 as indicated in Figs. 5 and 6 of the drawing, or a helicallycoiled Wire spring 23 as indicated in Fig. 7. ln either event andirrespective of which form of strainer is employed, that is Whether therubber band 22 as shown in Figs. 5 and 6 or the spring coil 223 as4shown in Fig. 7 or any similar device is employed, as clearly indicatedin Fig. 2, the strainer is adapted to be received in the body member ofthe drain so as yto cause the edge thereof and the edges of theoutturned resilient tongues 2O to engage with the face or seat 14 tofrictionally maintain the strainer in position, and when the rubberband'or Wire ring are additionally employed either of these devices or asimilar member additionally engages the face or seat 14 y to furtherassist in maintaining the strainer in position.

The strainer as hereinbefore described is readily removable from thebody member or shell of the drain when it is desired to retain the Wateror other liquid in the sink or basin or other receptacle so that forthis purpose a stopper 24 may be employed. As clearly indicated in Fig.3 the stopper 24 is made in the form of a truncated cone, the taperededge of Which bears against the seats 15 and 16 completely closing theopening to the body member Without engaging the face or seat 1st Withwhich the strainer member contacts. Also as illustrated in Fig. 3 thestopper 2l as is customarv may be fitted with a centrally disposed pin25 and ring 26 for connection to one end of a chain, the opposite end ofwhich may be secured to a post to prevent the stopper from becominglost.

From the foregoing description it will now be understood that the sinkdrain made in accordance With this invention is one in which thestrainer and stopper may be interchangeably employed Without the use ofthe one in any Way interfering with the eiicient use of the other.

l claim as my invention:

1. In a sink drain and the like, a body member having adjacent one endthereof a substantially cylindrical face, a strainer adapted atitsvperiphery to bear against the outer portion of said cylindricalface7 and a series of U-shaped resilient tongues cut from the bodymember and each bent so that only the extremity thereof is adapted toengage frictionally with the said cylindrical face to normally assist inmaintaining the strainer in position in the body member and that thebase thereof is appreciably spaced from the said cylindrical face whenthe sink drain is in position in the body member.

2. ln a sink drain and the like, a body member having adjacent one endthereof` a substantially cylindrical face, a strainer having a peripheryof substantially the same diameter as the said cylindrical face, and aplurality of U-shaped tongues in oppositely disposed pairs each cut fromthe body of the strainer and having its outer end bent so that theextremities of the oppositely disposed pairs of said tongues are spaceda distance approximately equal to the diameter of the said strainerwhereby the extremities Y of the tongues also bear against the saidcylindrical face to assist in maintaining the strainer in position inthe body member.

3. ln a sink drain and the like, a body member having a substantiallycylindrical inner face adjacent one end thereof, a plate forming astrainer having a plurality of tongues out therefrom, each tongue beingturned inwardly to channel shape, and a friction device lying Within thesaidV channel shaped tongues and adapted to engage the said cylindricalface to frictionally maintain the` plate in position in the body member.

4. In a sink drain and the like, a body member having adjacent the outerend thereof a. substantially cylindrical face, a plate forming astrainer and having a plurality of tongues cut therefrom adjacent theedge thereof, with each tongue turned outwardly so that the edges of thetongues and the edge of the plate are adapted to frictionally engage thesaid substantially cylindrical face to maintain the plate in positiontherein, and a resilient device carried by the said tongues foradditional engagement with the said substantially cylindrical face.

Signed by me this 24th day of July 1923.

ABRAM N. PASMAN.

